Hi All, Im trying to get an exchange 2010 (sp2) transport rule to copy all mails sent or recieved which include UK NI numbers in to an additional mailbox. Ive tested various combinations buttest emails with specific format in do not get copied, and other emails which don't seem to be fully compliant with the rule are. Has anyone done this before or can you confirm I'm using correct format please? \D\D\d\d\d\d\d\d\D JJ666666J - should get caught? \D\D\s\d\d\s\d\d\s\d\d\s\D JJ 66 66 66 J - should get caught?Any suggestions? Thanks

Looks right to me. http://technet.microsoft.com/en-us/library/aa997187.aspx[string](0..33|%{[char][int](46+("686552495351636652556262185355647068516270555358646562655775 0645570").substring(($_*2),2))})-replace " "

Looks right to me. http://technet.microsoft.com/en-us/library/aa997187.aspx[string](0..33|%{[char][int](46+("686552495351636652556262185355647068516270555358646562655775 0645570").substring(($_*2),2))})-replace " "